Cash Flow Calculator for Small Business

This model walks the income statement down to cash. Revenue minus cost of goods sold gives gross profit; subtracting operating expenses gives operating income, or EBIT; adding back depreciation gives EBITDA, a rough proxy for operating cash generation before capital structure and accounting policy. Net income here is operating income plus other income minus taxes. Operating cash flow is then reconstructed by the indirect method, adding depreciation back to net income because it reduced reported profit without any cash leaving the business. Free cash flow subtracts capital expenditure, since replacing assets is a real cash cost that never appears as an expense in the period it is paid, and the remaining figure after debt service is the net change in the bank balance. Useful reference points: gross margins cluster around 20 to 30 percent for grocery and distribution, 40 to 60 percent for manufacturing and specialty retail, and 70 to 90 percent for software. EBITDA margins above 15 percent are generally considered healthy in services, and small-business acquisitions are frequently priced at roughly 3 to 6 times EBITDA. The important caveat is that this calculation ignores working capital. Changes in accounts receivable, accounts payable, and inventory can swing operating cash flow by more than net income itself, which is precisely how a profitable, fast-growing business runs out of money while funding inventory and waiting 45 or 60 days for customers to pay.

Reporting cash separately from profit is a twentieth-century development. Nineteenth-century financial statements consisted of a balance sheet and a profit and loss account, and the gap between reported earnings and cash on hand was left to the reader. American practice moved toward a funds statement through the middle of the century, and the Accounting Principles Board formalized it in Opinion No. 19 in 1971, requiring a statement of changes in financial position. That statement was permissive about whether funds meant working capital or cash, so comparability suffered. The Financial Accounting Standards Board replaced it with Statement of Financial Accounting Standards No. 95 in 1987, mandating a statement of cash flows split into operating, investing, and financing activities, which is the structure still in force and which the international standard IAS 7 mirrors. Free cash flow rose to prominence in the same period through corporate finance theory and leveraged transactions. Michael Jensen's 1986 free cash flow hypothesis argued that cash beyond profitable reinvestment opportunities tends to be wasted by managers unless disciplined by debt or distributions, an argument that shaped the buyout wave of that decade. EBITDA came out of the same environment, popularized by leveraged buyout and cable television financiers, notably John Malone at TCI, who needed a measure of debt-service capacity that ignored the enormous depreciation charges generated by capital-intensive network construction.